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J Pediatr Orthop B. 1999 Apr;8(2):118-21.

Analysis of radiographic measurements as prognostic indicators of treatment success in patients with developmental dysplasia of the hip.

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  • 1Division of Orthopaedic Surgery, Stanford University School of Medicine, Stanford University Medical Center, California, USA.

Abstract

Measurements were taken and statistically analyzed from the initial radiographs, the 1-year follow-up radiographs, and the most recent radiographs of 81 patients (103 hips) to determine which measurements could predict the success of treatment. The average follow-up was 49 months (range, 12-139 months), and the average age of the patients at the last follow-up was 65 months (range, 15-190 months). Analysis of the data showed that the measurement with statistically significant predictive value was the Tonnis grade of dislocation determined from the initial radiograph. A single unit increase in the Tonnis grade was associated with a doubling of the odds of failure in patients treated with a Pavlik harness (P < 0.04, odds ratio = 2.2) or a closed reduction (odds ratio = 2.0).

PMID:
10218173
[PubMed - indexed for MEDLINE]
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